@misc{indiciae8f5d4f6f910e,
  title = {Total intensity aeromagnetic map of Vanderburgh County, Indiana},
  author = {John R. Henderson and J. L. Meuschke},
  year = {1950},
  doi = {10.3133/gp43},
  url = {https://pubs.usgs.gov/publication/gp43},
  note = {Source identifier: gp43}
}